Railway-car truck



0. H. WELLMAN.

RAILWAY CAR TRUCK.

APPLICATION FILED IuNE 30,1921.

Patented Feb. 28, 1922.

4 SHEETS-SHEET I.

` I v "INVISII/TOR. 1425 (lf/WELL/If//I A f1 'ORNE Y.

O. H. WELLMAN.

RAILWAY CAR TRUCK.

APPLl'cATloN FILED' JUNE 30.1921.

Patented Feb. 28, 1922.

4 SHEETS-SHEET 2.

' I A TTORNEY.

0. H. WELLMAN.

RMLWAY CAR TRUCK.

APPLICATION FILED JUNE 30,1921. u Patented Feb. 28, 1922.

4 srIEETs-sHEEr 3.

0. H. WELLMAN.

RAILWAY CAR TRUCK.

APPLICATION FILED JUNE 30.1921.

HEETS-SHEET 4.

INVENTUR.

A TTORNE Y.

UNITED STATES Param* OFFICE.

OTTO H. 'WELLMAbL' OF DUBUQUE, IOWA.

RAILWAY-CAR. TRUCK.

To all whom t may concern.'

Be it known that I, O'i'io H. WELLMAN, a citizen of the United States, residing at Dubuque, in the county of Dubuque and State of Iowa, have invented certain new and useful improvements in a Railway-Car Truck, of which the following is a specification.

This invention relates to improvements in railway car trucks, and has for one of its objects to increase the eiiiciency and utility of devices of this character.

Another object of the invention is to provide a device of this character formed of few parts and arranged to support each other and capable of resisting thrust from all directions.

Another object of the invention is to provide a device of this character wherein the parts are interchangeable from side to side and end to end so that it will be an easy matter to standardize the truck and make alterations and repairs.

Another object of the invention is to provide a device of this character so constructed that the wheels and axles may be detached by elevating the truck for a relatively slight distance.

Withthese and other objects in view the invention consists in certain no-vel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the inventionf- I Y Figure l is a side elevation Iof the improved truck of the four wheel type.

Fig. 2 is a plan view of the same.

Fig. 3 lis a transverse section on the line 3-3 of Fig. 2.

Fig. 4 is an enlarged sectional detail on 4the line 4 4 of Fig. 2.

Fig. 5 is a perspective view of one end of one of the side frames illustrating the construction of the axle box engaging portion.

Fig. 6 is a detail illustrating a modification in the construction of the axle box engaging ortions of the side frames.

Fig. is a side elevation illustrating the modification necessary to adapt the improved device to a" six wheel passenger truck.

Fig. 8is a perspective view illustrating the construction of the spring pocket portion of the side frame.,

Fig. 9 is a plan view of the parts shown in Fig.

y Specification of Letters Patent. Patented Feb. 28, 1922.

Application led .Tune 30, 1921.

Serial No. 481,575.

The improved truck comprises in general side frames having means for engaging the axle boxes and a bolster member adapted to support a car body and yieldably engaged with the side frames.

.When employed for ordinary freight cars with four wheels for each truck, the whole frame will contain three main pieces only, as illustrated in Figs. l, and 2, while the truck frame when employed for a six wheel, or passenger truck will contain seven main parts only, including the central axle box supports, as shown in Figs. 7 and 9.

When adapted foran ordinary four wheeled truck, the improved device includes side frames which are precisely alike and interchangeable, and each formed with upper members 10 and lower members 11, and intermediate connecting webs 12, the latter.

each formed with an upwardly opening pocket 13.

At their ends the members 10 are downturncd at 14 and the members 10 and 11 are connected by a stop member 15 spaced from their outer ends. The spaces between the portions 14 and 15 correspond to the axle boxes, the axle journals being indicated by dotted lines 16.

The lower ends of the portions 14 and'15 are pierced to respectively receive pivot pins 17 and 18, and coupled to the pivot pins are holding members 19 and 20 with their confronting ends pivotally united at 21.

The members 14, 15, 19 and 2O enclose the axle boxes and firmly support them in position, being held in place by the pivot pins, while at the same time easily detached, when required to remove or insert the axles and trackwheels.

. The pins 17 are formed slightly tapering as shown in Fig. 5 to increase their grip and efficiency and prevent them from working loose under jars and concussions while in use.

By this means a material saving of labor and time is gained.

The bolster portion of the improved truck is representedv as a whole at 22, and is formed with an intermediate socket 23 to receive the centerpin of the car body, not shown, which socket is surrounded by an upstanding flange or rim 24.

At its ends the bolster is provided withl downtuined ends 25 to enter the pockets 13 in the web 12 of the side frames, the portions 25 each having a plurality of downwardly open sockets 26 to, receive relatively -heavy coiled springs 27.

lEach of the portions 25 is formed with a vertical slot 28 to receive a pin 29 extending through the walls of the web 12 to prevent upward displacement of the bolster.

The inner wall of the portion 12 is less in height than 'the outer wall, as shown at 30, and the upper edges ofboth the inner and outer wallsare reinforced by ribs 31., Attached to or formed on the outer faces of the downturned portions 25 are chaling bosses or plates 32 to receive the lateral thrusts and jolts when the car is in motion. Any number of the springs 27 may be employed and the number increased or decreased by simply lengthening or shortening the web 12. Suitable lanti-friction rollers `33 are arranged in the upper facesof the bolster near the ends to assist in the oscillatory movement of the trucks when running around curves.

The frame members will preferably be of cast steel, as light as possible consistent with the strains to which they will be subjected, and the members 10 and 11 will preferably be ribbed, as illustrated, to combine strength with lightness. y

When arranged as a six wheel truck, for instance for passen er cars, the device will be constructed as s own in Figs. 7 and 9. ln this arrangement the side members of the frame are each in two sections pivotally coupled at their inner ends at 34 to an in.

verted U-sha ed member 35 with the outer ends of the rame members constructed the same as in the four wheel truck, as *1n Figs.

1, 2 and 5.

The frame members in the six wlieel truck are each provided with one of the intermedilate pocketed webs 12 as in Figs. 1, 2, 3, and

5. ln this six wheel truck structure the bolster is formed with a central portion 36 and four branching portions 37, the latter having downturned internally socketed ends 38 corresponding to .the ends 25 of the four wheel truck, to engage in the various pockets 13 of the webs 12,as shown. f y g The inverted U-shaped members 35 embrace the journal boxes of the central axle, and are held from upward'displacement by a pivoted stop bar 35 corresponding to and performing the same function as the bar 20 of the structure shown in Figs. 1 and 5.

The parts are reversible and interchangeable, so that duplicate parts may be provided, which renders renewal and repairs a relatively easy matter.

The novel form of bolster operates to :firmly support the truck frames and retain them in position, while at the same 'time leaving them fiexible and yieldable to prevent displacement under the severe strains to which devices of this character are subjected.

The springs can be increased or decreasedV` Bearing rollers, one of which is shown at 41, are mounted on the members 39 and bear against wear plates 42 on the lower face of a transverse frame member 43 of the car frame.

The improved device may be readily adapted for freight cars, passenger cars, auto trucks, trolley lines or other vehicles requiring trucks of this character.

In Fig. 6 a slight modification in the con'- struction is shown which may be employed in place of the structure shown in Fig. 5. This modified structure consists in forming the lower chord 11 of the side frame integral with the member 2O and substituting a wedge key 39 for the hinged member 19.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that modifications within the scope of the claims may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

What is claimed is Y 1. A railway car truck comprising side frames having means for engagement with the vaxle boxes vof the truck and each with an upwardly opening pocket intermediate the ends, said pockets including outer and vinner walls, a bolster member /adapted to be coupled 'to a car body and with downturned ends engaging in saidpockets and held from longitudinal movement by the walls of the pockets, and springs within said pockets to receive the downward thrust of the bolster member.

2. A railway car truck comprising sideframes having means for engagement with vthe axle boxes of the truck and each with an upwardly opening pocket intermediate the ends, said pockets including outer and inner walls, a bolster member adapted to be coupled to a car body, said bolster having downturned ends engaging in said pockets and held from longitudinal movement by the walls of the pockets, and each of said downturned ends having a transverse slot, a holdmg pin extending through each of said pockets and through the slots, and springs within said pockets to receive the downward thrust of the bolster member.

3. A railway car truck comprising sectional side frames having means at their outer ends for engagement with the journal boxes ofV the terminal axles and each section with an upwardly openlng pocket intermediate the pockets and held from longitudinal movement by the walls of the pockets, and springs 10 within said pockets to receive the downward thrust of the bolster member.

In testimony whereof, I aix my signature hereto.

OTTO H. WELLMAN. 

